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Dealers / Diamond Bar, CA / Mercedes-Benz of West Covina | Sales Showroom
Mercedes-Benz dealerWest Covina, CA
F

Mercedes-Benz of West Covina | Sales Showroom

Buyer's Guide grade F · 1,142 public reviews · September 2026

Mercedes-Benz of West Covina | Sales Showroom earns an F. 1,142 public reviews average 3.8 stars and 29.9 percent are one or two stars. That ranks it above 10 percent of graded dealers around Diamond Bar.

At a glance

  • A heavy share of past buyers left one or two stars.
  • Complaint share 29.9 percent, higher than the 15.5 percent typical near Diamond Bar
  • Reviewers mention car buying experience most, in 62 reviews
  • Open Sundays · Mercedes-Benz dealer

Why It Got an F

The star average is 3.8 from 1,142 public reviews. After the grade pulls it toward the national average, it counts as 3.81. 29.9 percent of reviews are one or two stars. To reach a C it would need a complaint share of 25 percent or less. How the grade works.

How the Stars Break Down

5 star756 66%
4 star35 3%
3 star9 1%
2 star17 1%
1 star325 28%

What Reviewers Talk About

The subjects that come up most in public reviews of this dealer, with how many reviews mention each one.

car buying experience 62smooth process 57kind staff 45best deal 37no pressure sales 19smooth transaction 14loaner car 10finance process 8battery replacement 3no hassle 3

Buying From Mercedes-Benz of West Covina | Sales Showroom

Mercedes-Benz of West Covina | Sales Showroom sells new Mercedes-Benz vehicles and usually takes trade ins, so its used lot is a mix of brands. A certified car from the brand program comes with a factory backed warranty. A used car that is not certified is sold on the same terms as any other used car, so read the window sticker. How certified cars work.

Luxury cars cost the most to get wrong. One deferred service item can cost more than an inspection many times over.

Whatever the grade, the grade is about the dealer. The car is its own question. Ask the dealer if an independent inspection is allowed before you sign. A good lot says yes.

Dealer Details

Address2010 E Garvey Ave S, West Covina, CA 91791
Phone626-885-9750
Websitembwestcovina.com
Listed featuresCar wash, Oil changes, Service department, Sells used vehicles, Checks, Credit cards, Debit cards, Phone pay, Delivery
TypeMercedes-Benz dealer

Hours

Monday8.30 AM to 9 PM
Tuesday8.30 AM to 9 PM
Wednesday8.30 AM to 9 PM
Thursday8.30 AM to 9 PM
Friday8.30 AM to 9 PM
Saturday8.30 AM to 9 PM
Sunday10 AM to 8 PM

Common Questions

Is Mercedes-Benz of West Covina | Sales Showroom a good dealer?
Mercedes-Benz of West Covina | Sales Showroom earns an F in the PPI Auto Buyer's Guide. A heavy share of past buyers left one or two stars. The grade reads 1,142 public reviews averaging 3.8 stars, with 29.9 percent at one or two stars. It rates past buyers' experience with the dealer, not any single car.
Can I get a car at Mercedes-Benz of West Covina | Sales Showroom inspected before I buy?
Yes. PPI Auto sends an inspector to the car on the lot in West Covina. You do not have to be there. The inspection covers 122 points, a full OBD-II scan with readiness monitors, a road test and photos of anything found, and the report comes the same day. Ask the dealer to hold the car while it is checked.
How is the grade worked out?
It needs 20 or more public reviews. The star average is pulled toward the national average by 25 average reviews so a short record cannot jump the line, and the share of one and two star reviews sets a ceiling. The full method is on our grading page.
Is Mercedes-Benz of West Covina | Sales Showroom open on Sunday?
Its listed Sunday hours are 10 AM to 8 PM. Hours change, so call before you drive over.

Other Graded Dealers Nearby

Grades update when public reviews do. Is this your dealership and something here is out of date? Tell us. See every graded dealer in Diamond Bar, CA. Found a car here? Book a pre purchase inspection in Diamond Bar, CA before you sign.

Buying from this lot?

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We check the car at Mercedes-Benz of West Covina | Sales Showroom before you sign.

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Details

No payment now · We confirm scheduling before any work

The grade covers the dealer. We check the car.

122 points, a full scan and a road test, on the lot, same day report.

Call 951-267-8500